Installation & User Manual

EX07200-121 Rev B
Manufacturer’s National Service Department | 400 Captain Neville Dr. Waterbury, CT 06705
Eemax® 800-543-6163 | EcoSmart® 877-474-6473 | Rheem® or Richmond® 800-374-8806
Information contained in this document is subject to change without notice.
13
7. TROUBLESHOOTING
ENSURE POWER TO THE UNIT IS “OFF” BEFORE REMOVING THE PROTECTIVE COVER FOR ANY REASON.
For status resolution, please consult the table for your heater model below.
LAVADVANTAGE & ACCUMIX II
Code
Name
Possible causes
Heater response
Possible solutions
F23
No heat
- element failure
- ECO tripped/malfunctioning
- triac(s) failed open
- relay/contactor malfunctioning
- control board failure
- inlet water supply out of spec
Heating will be disabled after 30
seconds of continuous no heat
condition.
- measure element resistance with
the unit completely turned off
F24
Low heat
- undervoltage
- triac(s) failed open
- control board failure
- inlet/outlet thermistor(s) failure
Heating enabled, reduced
performance (lower outlet
temperature).
- verify power supply (voltage) while
heater is running
F33
Residual heat
- internal water temperature elevated
without flow
- both triacs failed closed
Heating disabled until outlet
temperature falls below the
reactivation temperature (see
default parameters table).
- run water through the unit
F34
Overvoltage
- inlet voltage is too high compared to
the stated heater specifications
Heating enabled, reduced
performance (higher outlet
temperature).
- have certified personnel verify the
inlet voltage
- provide voltage within specified
range
F36
Undervoltage
- inlet voltage is too low compared to the
stated heater specifications
Heating enabled, reduced
performance (lower outlet
temperature).
- have certified personnel verify the
inlet voltage
- provide voltage within specified
range
F38
High flow
- flow is too high to heat the water to
setpoint temperature
Heating enabled, unit operates as
intended (lower outlet temperature
possible).
- reduce flow (outlet flow restrictor,
faucet aerator)
F47
Inlet thermistor
failure
- inlet thermistor interrupted or
disconnected
Heating enabled based on default
inlet temperature setting (see
default parameters table;
higher/lower outlet temperature
possible).
- inspect connections/wiring of inlet
thermistor
F48
Outlet
thermistor
failure
- outlet thermistor interrupted or
disconnected
Heating enabled, auto calibration
disabled.
- inspect connections/wiring of
outlet thermistor
F64
Freeze warning
- inlet temperature is too low (below
35°F)
Heating disabled while condition is
present.
- increase inlet water temperature
above 35°F
Status code
Model suffix
Default values
F33
T, ML
Trip
170°F
Reactivation
140°F
EE
Trip
100°F
Reactivation
95°F
S
Trip
195°F
Reactivation
165°F
FLOWCO
LED Pattern
Status/Problem
Possible causes
Heater response
Possible solutions
Solid light
Heating
N/A
N/A
N/A
One flash every four
seconds
Idle
N/A
- unit waits for flow
N/A
LAVADVANTAGE & ACCUMIX II DEFAULT PARAMETERS